Weighing machine



Aug; 7,

. W C. HALL WEIGHING MACHINE Filed May 23" 1921 WITNESS Aug. 7, 1923. 4 1,464,422

w. c. HALL WEIGYHING MACHINE Filed May 25 1921 4 Sheets-Sheet 2 Fai W a HQ/INVENTOR mgm WITNESS: ATTORNEY W. C. HALL WEIGHING MACHINE Aug. 7', 1923. 1,464,422

1 Filed May 23, 1921 4 sheets-sheet 5 WITNESS:

ATTORNEY Aug. 7, 19.23. y 1,464,422

W. C. HALL WEIGHING MACHINE Filed May 23 1921 4 Sheets-Sheet 4 z i 1 l 25 i /56 Mam 4 57 bym] 7 l? K 40 Q f7 'h 53 ,y 4f. I J 26 `68 vO 3'/ 3'/ .f5 67 Y H X 66 l j l 7 .ai 46 65 l J5 l 45 M r2a l 42 f l l/A /l l l/ V (.L Il, l

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wn'NEss; 'Affoglmtv Patented Aug. 7, 1923.

UNI-TED `sTArlls WILLIAM C. HALL, OF GREENVLLE, SOUTH CAROLINA.

WEIGHING- MACHINE.

Application filed May 23, 1921. Serial No. 471,688.

T all whom t may concern,

Be it known that I, WILLIAM C. HALL,`

chines, of which the following is a specifica-k tion.

rlhis invention relates to weighing machines of the platform type in which the weight of` a person standing upon the scale is ascertained -upon depositing a coin, and has for its object the provision of a weighing machine of this character which is so constructed that no springs are involved in its construction and which will therefore be more accurate in determining the weight.

An important object is the provision of a coin controlled springless weighing machine of this character which will be entirely automatic in action and rin which the construction is such that the various movements of the parts will be quickened so as to prevent injury to the mechanism on account of any such movement.

Still another object is the provision of a weighing machine of this character which will he extremely `attractive in appearance and in which the head portion is covered on both sides withy transparent material, preferably plate glass, whereby the person using` or patronizing the scale may see the operating mechanism.

A further object is the provision of a weighing device of this character which will he comparatively simple and inexpensive in manufacture, easy `in operation, not likely to get out of order, eflicient and accurate in use, durable in service and a general improvement in the art.

With the above and other objects andadvantages in View, the invention consists rin the details of construction to be hereinafter:

i trated in the accompanying drawings, in

which: i

Figure 1 is a front elevation of my scales showing it complete.

Figure 2 is an enlarged faced view of the head portion.` f

Figure 3 is a plan view 'of the platform portion with the platform removed.

Figure 4 is `a longitudinal sectional view through the platform portion andlower portion of the pedestal. A

Figures 5 and 6 are detail views ofthe mechanism withinthe platform portion.

Figure 7 is a `vertical longitudinal sec` tional view through the pedestal and head portion.

Figure 8 is a view similar to Figure 2, showing the partsin weighing position and showing the coin as being discharged from its scoop.

Referring more particularly to the drawings Ihave shown my device as comprising a casing which `includes a base portion 15, a pedestal portion 16 rising from the base, and a head portion 17 whichis provided at it-s front and back with a large opening 18 covered by a disk 19 of plate glass. Mounted within the base portion is the usual yset of levers and links designatedby the numeral 20, which supports the usual `type of platform 21 upon which` stands the person desiring to be weighed. The details of construction of the lever, and link mechanism 2O is not believed necessary as such construe tion is old and well known in the art. These levers and links are so arranged and correlated as to exert a downward pull upon a rod 22 when a weight is placed upon the platform 21. This rod 22 extends upwardly throughout the length of the pedestal por tion 16 ofthe device and has its upper end threaded `indicated at 23, this threaded end terminating adjacent the juncture of the head 17 with the pedestal.

The head portion 17 is provided at its top with an extension 24Chaving a coin receiving f charges into the pedestal portion 16 ofthe machine. It is of course understood that the pedestal portion 16'is hollow. Within the base portion 15 is provided a door 29 normally closing a` receptacle which is adapted to receive coins inserted within the machine, and it is to be understood that this receptacle is so positioned and has 'its entrance so arranged as not to interfere with I the action ofthe lever and link mechanism Also lof 20. This receptacle may be made olf any desired size.

Extending` transversely across the interior ot the head portion il? are spaced bars upon which are mounted spaced uprights supporting brackets 3l whichv carry lugs 32 projectiiugg Ytroni their sides. Secured to these lugs 32 is a biturcated brace bar o which has its central portion termed with a hole 34. Secured upon the under side of the bars S0 and depending thereilroni at the centers thereo'l is a U-shaped traine 35 which has its bight portion provided with a hole 36 aligning; with the hole 34. Associated with each et the upright supports 31 is a segment 3T having a toothed periphery 38 and carrying at its opposite side trunnions 539 revolvably engaged within holes in the supports 31 as shown. Depending trom the segment 37 are arms fl() which carry weights ll movable within the spaces between the lower portions oit the supports 3l.

lilovable vertically within the head portion 1T at the center thereot is a rod 42 which is guided within the holes 36 and 3st and which passes between the transverse bars 30. t its lower end this rod 12 is threaded as indicated at li-l and engaged upon this lower threaded end is a turn buckle structure lelwhich is also connected with a threaded upper end 23 oli the rod. Q2. At a point substantially between the bars 30 the rod l2 is termed on opposite sides with rack teeth and 4G for a purpose to be described and at its upper portion the, rod 42 is termed on opposite sides with rack teeth 47 which mesh with the toothed peripheries et the, segments 3S. This rod il@ is adapted to be moved when a person to be weighed, stands upon a platform 2l. ln order to cushion the movement oil the rod 42. or rather to prevent too tree movement thereof, l provide a cylinder t8 which is carried by the rod Ll2 as by means ot' suitable clips or brake bands t9 and this cylinder 1:8 co-operates with the piston 50 disposed therein and carried by piston rod 5l which depends trom the bracket Sie. This cylinder 4S has both ends closed except that, the upper end is perforated tor the passage ot the rod 5l. and the cylinder :nay be lilled with oil or other liquid it desired, and it is ol course.y necessary that the piston 50 be provided. with one or more suitable holes whereby to permit the oil or other liquid within the cylinder `to pass from one side of the piston to the other as will be readily understood.

Mounted upon the bars 30 the centers thereof are bearingsI 52 within which is journaled a shaft 53 which carries at one end an indicator or pointer 54; terminating;r preterably in the representation ot a human hand in the index position indicated at 55. This hand is movable over a graduated scale 56 which is located at the periphery of the opening 18 in the head, this graduated scale indicating pounds ot weight. The opposite end portion ot the pointer :il is enlarged to provide a tail 57 for a purpose to be described. flecured upon the shaft 53 between the bars 30 is a gear which meshes with the rack teeth Ll5 and secured upon the opposite end ot the shatt oil is a ratchet 59.

Cooperating with this ratchet is a pawl G0 termed on one end of an elongated rod 6l pivoted at (32 het veen two ot the up rights 8l. and carrying' at its tree end the scoop like member 63 normally positioned at the lower end ot the coin chute 26. A weight Gil is adjustably mounted upon the rod. 6l and is adapted lo be so positioned as to ovcrbalance the rod so that the pawl ond thcreot will normally be in engagement with the ratchet 59 except when a coin has been deposited through the chute 26 into the scoop G3, and this rod is so balanced through the medium ot the weinjht (il that betere the rod will return to its normal position it `will allow a complete revolution ot the ratchet 59 or the time required ilor such revolution as the case may be.

Extending: transversely oi the bars -lll are supportingy braces 65 which carry au automatic registering device GG the sha'lit of which is provided with a pinion G7 meshing with the rack teeth 46 and this register .is adapted to be actuated every time that the scale is used so that the owner o" the, scale may ascertain how many different persons have, been weighed.

liisinp` from the bars il() is a suitable support 68 upon the upper end et which is a 'lan shaped plate (39 carrying the legend Thank you, please call again. Ordinarily this loe'eud plate is covered by lhe tail. portion 5T ot the indicator 54 but `when the scale has been actua ted as will be hereinatter described and the indi :alor hand swings around to point to the wei eht o'l the person standingy upon the platform. the tail portion 57 Ot the indicator will be swung' out ol obstructing; relation to the lan shaped legend plate 69 so that the lengrcnd thereon will be displayed to the gaze o? the user ot the scale. It is also preferable that the segments 37 bear the legend Stand and Still The operation ot the device is as follows:

A person desiringr to ascertain his weight steps upon the plattorm 2l and then deposits a coin within the coin slot 25. The coin will then roll down the chute 26 and drop into the scoop 63 whereupon the rod 6l will be overbalanced so that the paw] end 60 thereof will be moved out ot engagement with thil ratchet 59. The weight ol the person upon the platform 2l will canse the levers and links 2O to operate to pull down upon the rod 9,2 and this will ol course result in pulling down uponv the rod 42, the downward `movement lof the rod 42 being cushioned or made slow by virtue of the provision of the cylinder 48 and piston 5.0 operating therei-n. As the rod 42 is thus moved downwardly the gear teeth 45 thereon meshing with the pinion 58 will cause the pinion `to turn and this will of course result in rotation of the shaft 53 and rotation of the pointer member 54 so that the indicating hand 55 carried by the latter will be moved over the graduated scale 56. The action of the engagement-of the rack teeth 47 with the toothed peripheries of the segment 38 is to retard the movement of the rod 42 and indicator member 54. The weight of the person upon the platform 2l will of course govern the position or point at which the indicator 54 will come to rest as will be obvious. When the scoop 63 carrying the coin swings downwardly as above described it will cause the coin to slip out into the funnel shaped end 28 of the chute 27 and the coin will pass through the y coin, the scoop member 63 will be overhalanced at the other side of the pivot and will` return to its normal position immediatel beneath the lower endl of the chute 26. This action cannot be completed however and will have no effect upon the mechanism until the person having ascertained his weight steps off of the platform 2l whereupon the pfawl end of the rod 61 will be re-engaged with the ratchet 59 so as to hold theimechanism locked until another coin is deposited. As stated above when the operator or person desiring to be weighed steps upon the platform and deposits the coin the tail end 57 of the indicator moves out of obstructing relation to the legend plate 69. It is also to be observed that every time the device is operated, that is every time the rod 42 is moved downwardly the Lenga-gement of the rack teeth 46 thereon with the pinion 67 will cause the register 66 to be operated. This register records the number of persons weighed.

From the foregoing description and a o study of the drawings it will be apparent that I have thus provided a comparatively simple and inexpensive weighing machine which will be accurate at all times` as there are no links or levers in the main portions thereof to expand or contract depending upon temperature. It is also to be observed that the device will be very attractive in appearance especially as the front and back of the head portions thereof are formed of plate glass discs or sheets so that a person weighing himself may be interested in watching` the movement of the mechanism y in the device.`

While I have shown and described the v construction and arrangement of parts as will not depart from the spirit of the invention or the scope of the subjoined claims.

llavingdescribed my invention I claim l. A weighing machine comprising a base member, a pedestal rising therefrom, a head member upon the upper end of the pedestal, a platform, associated with the base member, a series of pivoted levers and links arranged within the base member and supporting the platform, a rod extending vertically through the pedestal and operatively connected with the levers and links whereby to be moved downwardly when a weight is placed upon the platform, said head member being formed with a relatively large central opening, a scale arranged at the periphery of said opening and designating pounds, a transverse support rwithin the' head member at substantially the center thereof, a horizontally disposed shaft journaled upon said support, an indicator mounted upon said shaft and movable over said scale, a gear on said shaft, and rack teeth formed on said rod and meshing with said gear whereby to effect rotation of the latter and consequent rotation `of the indicator when weight is placed upon said platform, and coin-controlled means normally holding said shaft against rotation, apair of supporting members secured upon said transverse support, segments journaled upon said supports and having toothed peripheries, rack teeth formed on the upper'portion of said rod and meshing with the toothed peripheries of said segments, arms carried by said segments, and weights on said arms whereby said segments meshing 'with the second named rack tecth will tend to retard movement of the ro 2. A weighing machine comprising a base membera pedestal rising therefrom, a head member upon the upper end of the pedestal, a platform associated with the base member, a series of. pivoted levers and links arranged within the base member and supporting the platform, a rod extending vertically through the pedestal and operatively connected with the levers `and links 'whereby to be moved downwardly when a weight is placed upon the` platform, said head member being formed with a relatively large central opening, a scale arranged at the periphery of said opening and designating pounds, a transverse support within the head member at substantially the center thereof, a horizontally disposed shaft journaled upon said support, an indicator mounted upon said shaft and movable over said scale, a gear on said shaft, and rack teeth formed on said rod and'meshing with said gear whereby to effect rotation of the latter and consequent rotation of the indicator when Weight is placed upon seid plstorm.l and coin-controlled means norrnall7 holding said shaft against rotation, L dependingr iframe Carried by said transverse support and through which said rod operates, a piston rod depending from said Yframe and Carrying :i piston, and a cylinder carried by said rod and through which said piston operates, said cylinder being filled with a liquid, and thel piston therein being formed With zi hole whereby to permit flow or' the liquid from one side of the piston to the other.

In testimony whereof I aiX my signature.

WrLLrAM o. HALL. 

